Societe Chimique Des Charbonnages S.a.

Norsolor

Societe Chimique Des Charbonnages

Societe Chimiques Des Charbonnages S.a.

Societe Chimique Des Charbonnages Cdf Chimie, S.a.

Michel Cousin

Nicolas Meyer

Francois Boinot

Andre Hochin

Francois Michel-Dansac

Pierre-Michel Francois

Phenolic resin compositions. Phenolic resin compositions containing an additive consisting of at least 20% by weight of an alkaline or alkaline-earth metaborate relative to the toal weight of the additive. Applications to the manufacture of phenolic prepreg mats which are stable in storage.

Phenolic resin compositions suitable for the manufacture of prepreg mats

Compositions of phenolic resins, for example, phenol formaldehyde resins, containing an additive of triethanolamine borate or an amine/oxygen-containing boron derivative mixture, e.g., triethanolamine and boric anhydride, are particularly useful for the manufacture of prepeg mats.

Resin compositions based on phenolic resins

In the manufacture of creep-free prepregs based on phenolic resins of the resole type, the reinformcing agents are impregnated with an essentially solvent-free mixture of a phenolic resin and a viscosity controlling amount up to 60% by weight of the resin of an alkali metal metaborate or an alkaline-earth metaborate or a mixture thereof. The resultant compression molded articles exhibit improved strengths.

Manufacture of creep-free prepregs based on phenolic resins

Phenolic resin compositions. Phenolic resin compositions containing an additive consisting of at least 20% by weight of an alkaline or alkaline-earth metaborate relative to the total weight of the additive. Applications to the manufacture of phenolic pre-preg mats which are stable in storage.

Phenolic resin compositions

Phenolic resin compositions. Phenolic resin compositions containing an additive consisting of at least 20% by weight of an alkaline or alkaline-earth metaborate relative to the total weight of the additive. Applications to the manufacture of phenolic prepreg mats which are stable in storage.

New phenolic resin compositions

Reinforced phenolic laminates are provided with a finishing coat of a butylated phenol-formaldehyde resin, thereby removing surface irregularities. The finishing coat can be mass-pigmented to the desired color, thereby obviating the necessity of any additional color-containing coatings.

Laminates having an improved finishing layer

In a process for hardening phenol-formaldehyde resol resins, comprising conducting the hardening of the resins with an acidic solution of water and/or an organic solvent having dissolved therein an aromatic sulphonic acid and/or concentrated sulphuric acid, the improvement comprising the hardening in the presence of aniline added to the phenolic resin beforehand in a quantity of between about 0.5 and 2% relative to the weight of the phenolic resin whereby the pot life is extended and the cure time is satisfactory, the resultant products being especially useful as prepegs.

Hardening phenol-formaldehyde resols in the presence of aniline

There are obtained laminates of improved fire resistance comprising a substrate of reinforced phenolic resin, directly coated on at least one side thereof with a surface layer of a furan resin, and bonded to the outer surface of the furan resin a 'gel-coat' of an unsaturated polyester resin, wherein the furan resin contains boron in sufficient amounts to impart an improved fire resistance to the laminates as compared to the fire resistance of the outer surface gel-coat. The boron is introduced as boric anhydride by use of a substantially anhydrous boric anhydride hardener solution to harden the furan resin.

Laminates of improved fire resistance

Furan resins of improved fire resistance are produced by curing the resins with a substantially anhydrous solution of boric anhydride, an organic solvent and a concentrated acid.

Growing community of inventors

Loison-Sous-Lens, France

Michel Cousin